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Quality ARRL logo merchandise for hams!
Learn the strengths and limitations of the battery, different battery types and what conditions are best for a battery.
Building practical testing devices has never been easier!
A DIY guide to designing and building transistor radios. Includes complete projects and detailed schematics.
A story of the quartz crystal—a technology that changed the tide of World War II. New Paperback Edition!
An essential guide for anyone wishing to understand digital communication systems through simulations using SystemVue.
Part of the Amateur Radio adventure series by popular author Cynthia Wall, KA7ITT. A sailing trip turns into a fight to save a little boy's life.
A clear, step-by-step approach to practical uses of discrete-signal analysis and design, especially for communications and radio engineers.
A fun and easy way to start building circuits for your projects!
This book traces the life of Don Wallace and with it the early history of Amateur Radio.
Special Event Stations, DXCC Program, Operating Resources, Awards, International Operating, QSL Service, Operating Specialties, Contests, Centennial QSO Party, Logbook of the World, Amateur Code, W1AW
FCC License Info and Forms, Volunteer Instructors/Mentors, Courses & Training, Getting Licensed, What is Ham Radio, Volunteer Examiners, College Students and Educators, Amateur Radio in the Classroom, Get on the Air, License Certificates
Join ARRL/Renew Membership, Member Directory, myARRL, Membership Certificate, Membership Levels, Member Support, Member Discounts
State and Local, Technical Relations Office, Volunteer Consulting Engineer Program, Volunteer Counsel Program, Antenna Regulation and Zoning, CCR Study Information, International, Federal RFI Preemption, Federal
Public Service Honor Roll, Ham Aid, Public Service Resources, ARES, Served Agencies and Partners, NTS
ARRL References, ARRL Lab, Radio Technology Topics, Radio Frequency Interference (RFI), Tech Portal
Volunteer Opportunities, Youth, Hamfests and Conventions Calendar, Donate to ARRL, Recruiting & Outreach, The ARRL Foundation, Clubs
ARRL Publication Dealers, ARRL Store, List all Products, Periodicals, Customer Service/Support, Shipping, Product Notes
ARRL, the national association for Amateur Radio
225 Main Street
Newington, CT, 06111-1494 USA